ble service uuid not found!

[furkan7852]

from network import Bluetooth
import pycom
import time
clientconnected = False
print('Advertising Bluetooth...')
bluetooth = Bluetooth()
bluetooth.set_advertisement(name='lopy', service_uuid=b'1234567890abcdef')

def conn_cb (bt_o):
    events = bt_o.events()
    if  events & Bluetooth.CLIENT_CONNECTED:
        print("Client connected")
        clientconnected = True
    elif events & Bluetooth.CLIENT_DISCONNECTED:
        print("Client disconnected")

bluetooth.callback(trigger=Bluetooth.CLIENT_CONNECTED | Bluetooth.CLIENT_DISCONNECTED, handler=conn_cb)
bluetooth.advertise(True)

#Create service and characteristic
srv1 = bluetooth.service(uuid='0000000000000004', isprimary=True)
chr1 = srv1.characteristic(uuid='0000000000000002', properties=Bluetooth.PROP_INDICATE | Bluetooth.PROP_BROADCAST | Bluetooth.PROP_READ | Bluetooth.PROP_WRITE | Bluetooth.PROP_NOTIFY, value='InitialValue')

#Create callback for read events on the characteristic
def char1_cb(chr):
    events = chr.events()
    if events & Bluetooth.CHAR_READ_EVENT :
        print('Bluetooth.CHAR_READ_EVENT')

chr1.callback(trigger=Bluetooth.CHAR_READ_EVENT, handler=char1_cb)

#Update the characteristic value very few seconds
i="l1=32.8156187454"
k="l2=39.1234567890"
m="max mesaj boyutu=20"
while clientconnected:
    
    chr1.value(i) #Set the characteristic value - should trigger notification is a client has registered for notifications
    time.sleep(1)
    chr1.value(k)
    time.sleep(1)
    chr1.value(m)
    time.sleep(1)
    
    
    

This code works. I send message to phone yesterday. I paired with phone now but ble terminal error this "service uuid not found"